Which of the following / g,aew+mds,g statements about the effect of surface area and volume on the cell’s a ,+wsm,/ dggeprocesses is false?

  Which statement best zwl0 i i c,ovy2.s3j5rso7f8r) oqub/ describes stem cells?

  Which is a correct description of the cell type adapted for gas exu fj.q2qdxt+;f15o jr9j c ;zfchange in the lung; t5ujjdrq;9 xfzo f.fqc1 j2+s?

  Which of the following explains the limitat9at;j al u)y wbz6+f2yions on cell size?

  What is this cell's most likely primary function, and where courp uo(n,6h;wy h2- .uokuuap /r,r)oe ld it be located in a mam rw; rhup-e/.k,yuru p(h 2)aoo,uon 6mal?

  Which of the following characteristics of type I pneumocytes contribute to invua*trl3 ,6qpcreal,6 u* 3vqrtpasing the rate of gas exchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow tranm,cdt h e.zd kgt*-4+vsplant from a 36 year old. One of the functions of these cells is to produce red and white blood cellzc,. dek- dh4mtvtg+*s. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells an f* c7+rf ; ,hmcput),u+vrddqd striated musc dtu+,f)q fd; rm,+*phur vc7cle fibres?

Below is a diagram of a motor neuron. Neuronspp wu,5 rb.bp- are the longest cells in the human body. bupb.pr -w5 ,p
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies sometimes suffer from infant respibxpt 6bwgm(c 49+ce6 qow2z7cratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram belebcw6(+mc 9g4 c7qw6zx otp2b ow shows two different alveoli structures.


1.Describe one feature of the surfactant.

2.Suggest a treatment for infant respiratory distress syndrome.

3.Draw a labelled diagram of the structures in an alveolus that are important for gas exchange.

  Which of the following is a reason that embryonic stehza2do nti s9+:fj9an 5fy2r/c 57rrom cells are not used in the tr tz:9hn sarr rf ao9o52/i+jn 2cfy5d7eatment of leukaemia?

  The table shows the diameters ftq:j44q cb 5vof red blood cells from different organisms. Which red blood cell will have the highest surface area to volume ratio tc:4jq45fbqv ?

1.Explain how the shap jem v)/ezh0.o( ;fkgd*s2frb e of erythrocytes and cells lining the proximal convoluted tubule make these2.;jdg)sz*m brkeo ve /(ff0h cells more adapted to the functions they perform.

2.Compare and contrast the structure of striated muscle cells and cardiac muscle fibres.

3.Explain how the structure of egg and sperm cells are adapted to their functions.

  Which statements about embryonic stem cells and specialisw5nz;s+ h74q; ynj bl o3grse6ed cells is/are not true?wjs5n 7r;+o4l6 szy gnqheb; 3

I. Embryonic stem cells have higher levels of DNA methylation than differentiated cells
II. Specialised cells are more differentiated than embryonic stem cells
III. Most specialised cells and embryonic stem cells both contain the entire genome of an organism

  In humans, which of the folj,7h (f gqhv gmkgukf:(-3g x3lowing is the correct order from smallest to largest?uqj:kh (g,ff3g7(hxg m3v-gk

  Which row in the follomd4i rd8hw28 y lrq6+/hc. kafwing table gives the correct disadvantages of the different stem cell sources for therapeutic uses? dhl6r cqd8 /.4hfm2 ywa8+ikr

1.Describe how the use of stem cells may be used to treat type I diab ci5knpd)uh/ m/j, rh 6c74pazetes in the c p7/j hi/5d ahkzu mp6,r4nc)future.

2.Explain the factors that limit cell size in humans.

3.Explain how red blood cells and striated muscle fibres are adapted to their function.

Below are diagrams of specialise l etipom:,xvrvn),4.)gz r, bd cells (not to scale).

1.Put these cells in order of size, from the smallest to the largest.

2.Compare and contrast totipotent, pluripotent and multipotent stem cells.